In a nation where magic reigns supreme, the only duke's daughter, Eltriede, who cannot use magic, was supposed to have been executed for her cruel and heinous deeds, having exploited wealth and power to the fullest. However, she finds herself back on her eighth birthday, ten years in the past!? Regretting her past life, Eltriede chooses to live outside of noble society. Instead of her own country, where technology has stagnated due to an over-reliance on magic, she acquires advanced knowledge and skills from other nations, becoming a highly intelligent and capable woman. Although she wishes to live peacefully, far from the aristocracy, Eltriede is practically forced to participate in the selection process for the Crown Prince's consort!? Resolved to bring happiness to those wronged by her schemes in her previous life, now that she's inevitably involved with noble society, Eltriede begins to devise clever plans and take action―! A reverse reincarnation fantasy where a lady who returned from death uses her past life's experiences and the vast knowledge she acquired in this life to bring happiness to others!